CA2596092C - Channel calibration for a time division duplexed communication system - Google Patents

Channel calibration for a time division duplexed communication system Download PDF

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Publication number
CA2596092C
CA2596092C CA2596092A CA2596092A CA2596092C CA 2596092 C CA2596092 C CA 2596092C CA 2596092 A CA2596092 A CA 2596092A CA 2596092 A CA2596092 A CA 2596092A CA 2596092 C CA2596092 C CA 2596092C
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Canada
Prior art keywords
correction factors
station
matrix
channel response
user terminal
Prior art date
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Expired - Fee Related
Application number
CA2596092A
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English (en)
French (fr)
Other versions
CA2596092A1 (en
Inventor
Mark S. Wallace
John W. Ketchum
J. Rodney Walton
Steven J. Howard
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Qualcomm Inc
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Qualcomm Inc
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Priority to CA2732214A priority Critical patent/CA2732214A1/en
Publication of CA2596092A1 publication Critical patent/CA2596092A1/en
Application granted granted Critical
Publication of CA2596092C publication Critical patent/CA2596092C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
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    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
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    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
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    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
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    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
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    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
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    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CA2596092A 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system Expired - Fee Related CA2596092C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2732214A CA2732214A1 (en) 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/045,781 2005-01-27
US11/045,781 US8570988B2 (en) 2002-10-25 2005-01-27 Channel calibration for a time division duplexed communication system
PCT/US2006/003203 WO2006081550A2 (en) 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2732214A Division CA2732214A1 (en) 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system

Publications (2)

Publication Number Publication Date
CA2596092A1 CA2596092A1 (en) 2006-08-03
CA2596092C true CA2596092C (en) 2013-07-30

Family

ID=36215812

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2732214A Abandoned CA2732214A1 (en) 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system
CA2596092A Expired - Fee Related CA2596092C (en) 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2732214A Abandoned CA2732214A1 (en) 2005-01-27 2006-01-27 Channel calibration for a time division duplexed communication system

Country Status (11)

Country Link
US (1) US8570988B2 (ja)
EP (1) EP1847036A2 (ja)
JP (2) JP4773461B2 (ja)
KR (2) KR100958957B1 (ja)
CN (2) CN102158293B (ja)
BR (1) BRPI0607131A2 (ja)
CA (2) CA2732214A1 (ja)
RU (1) RU2407151C2 (ja)
SG (2) SG143245A1 (ja)
TW (1) TWI371188B (ja)
WO (1) WO2006081550A2 (ja)

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US8570988B2 (en) * 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
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US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
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US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US7333788B2 (en) * 2002-12-20 2008-02-19 Texas Instruments Incorporated Method for calibrating automatic gain control in wireless devices
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US7206550B2 (en) * 2003-12-29 2007-04-17 Intel Corporation Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems
US8369790B2 (en) 2003-12-30 2013-02-05 Intel Corporation Communication overhead reduction apparatus, systems, and methods
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